[14a-D519-1~7] 9.1 Dielectrics, ferroelectrics

[14a-D519-3] Effect of Mo, W substitution on ferroelectric characteristics, crystal and electronic structure of Bi_0.5K_0.5TiO₃-BiFeO₃--KTaO₃ based ferroelectric ceramics

〇Kawamoto Tsuyoshi¹, Ishida Naoya¹, Kitamura Naoto¹, Idemoto Yasushi¹ (1.Tokyo Univ. of Sci.)

Keywords:Crystal structure, Ferroelectric, Quantum beam

Lead zirconate titanate (PZT) is widely used as a ferroelectric material used in electronic devices, but since lead oxide is toxic,lead-free material (Bi_0.5K_0.5) TiO₃-BiFeO₃(BKTBF) based solid solution, our laboratory has investigated the relationship between the ferroelectric properties and crystal structure of BKTBF based solid solutions.In this research, focusing on (Bi_0.5K_0.5)TiO₃-BiFeO₃-KTaO₃ in which potassium Ta is solid-solved, other metal element (Mo, W) substituted samples are prepared and evaluated of ferroelectric characteristics, crystal structure analysis was performed using Synchrotron X-ray diffraction. The relationship between the ferroelectric characteristics and the crystal and electronic structures were investigated.